TB 126 - Metro Gold Line Eastside Extension Const. Phase

Question 1

The Metro Gold Line Eastside Extension (MGLEE) is an MTA tunneling project that will extend the existing Gold Line an additional __ miles from Union Station to Atlantic Boulevard

Answer 1

6

Question 2

MGLEE features include:

• __ miles of Light Rail Service

Answer 2

6

Question 3

MGLEE features include:

• __ stations (two underground)

Answer 3

8

Question 4

MGLEE features include:

• _____ tunnels (1.8 miles long) Boyle Avenue to Lorena St.

Answer 4

Twin

Question 5

MGLEE features include:

• Ride time from Union Station to Atlantic Station - ___ minutes

Answer 5

17

Question 6

MGLEE features include:

• Operating hours from _____a.m. to ____ a.m.

Answer 6

4: 30
12: 30

Question 7

The tunnel depth will be ___ feet below grade and it is anticipated that during the tunneling operation pockets of methane gas will be encountered

Answer 7

40

Question 8

A __” water supply system provides cooling for the TBM and water for firefighting operations

Answer 8

4

Question 9

This system is equipped with 2-1/2” NST outlets every ____ feet within the tunnel

Answer 9

200

Question 10

Compromised atmospheres are the greatest risk in tunnel construction; intrinsically safe fans (__________CFM) provide ventilation and evacuate air from the tunnel through a 72- inch vent pipe

Answer 10

100,000

Question 11

Excavation of earth is accomplished with a Tunnel Boring Machine (TBM), which is approximately ____ feet long and can tunnel up to ____ feet a day

Answer 11

300

100

Question 12

A shield protects a ___’ area around the front of the TBM as it bores and when enough area has been excavated, hydraulic rams are retracted and a segmented concrete liner is installed. Once installed

Answer 12

20

Question 13

__ 8-passenger diesel locomotives move the muck cars

Answer 13

2

Question 14

Each locomotive is ___ feet long, five feet wide, weighs approximately 35 tons and is equipped with an on-board extinguishing system that the operator can activate from three different locations

Answer 14

21

Question 15

Diesel fuel capacity is ___ gallons and fueling is done on-site.

Answer 15

75

Question 16

A muck car measures ___’ long; __’ wide with ____’ high sides

Answer 16

15
5
6.5

Question 17

A muck car has a empty weight of ____ pounds

Answer 17

9,000

Question 18

A loaded car can weigh as much as _______ pounds

Answer 18

35,000

Question 19

The Fire Department will respond to __ portal entries during the construction of the project

Answer 19

3